纳卫星 nàwèixīng nanosatellite Origin Definitions Defs Strokes Stroke Words Sentences Sents 纳 納 nà nano- (bound form) prefix for one-billionth卫星 衛星 wèixīng noun satellite A celestial body that orbits a planet, such as a moon; an artificial object placed in orbit around the earth or another planet for communication or research